Chemistry MCQs Online Quiz Test 3

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Chemistry Objective Type MCQs Online Quiz

Q.1: Which of the following points are important in connection with equilibrium constant ?

  1. Kc is constant at given temperature
  2. Kc is unaffected by change in concentration of reactants or products
  3. Kc indicates the extent of reaction but not about the rate of reaction.
  4. All of the above

D

Q.2: Solubility of CaF2 is 2.0×10-4 gdm-3 then Ksp of CaF2 is——–?

  1. 4.0 x 10-8
  2. 3.2 x 10-11
  3. 2.0 x 10-8
  4. 4.0 x 10-12

B

Q.3: The unit of molality is———?

  1. moles dm-3
  2. moles kg-1
  3. gram dm-3
  4. none

B

Q.4: A solution can be both———-?

  1. dilute and concentrated
  2. dilute and saturated
  3. saturated and unsaturated
  4. saturated and super saturated

A

Q.5: Consider the following redox reaction. Zn+dil HNO3? Zn (NO3)2 + N2O + H2O The coefficient number of HNO3 in the equation is———?

  1. 6
  2. 8
  3. 10
  4. 4

C

Q.6: Which of the following elements react with steam to produce H2 gas?

  1. Pd
  2. Ni
  3. Sn
  4. All of the above

D

Q.7: Dehalogenation of ethyl tetrahalide will give———-?

  1. ethene
  2. ethyne
  3. ethyl halide
  4. all of the above are possible

B

Q.8: Upto ———- C atoms alkanes are gases?

  1. 2
  2. 3
  3. 4
  4. 6

C

Q.9: Incomplete oxidation of methane in the limited supply of air forms ?

  1. CO2 and H2O
  2. CH3OH
  3. CO + H2 + C
  4. CO + H2O + C

B

Q.10: Order of ease of halogenation in alkane is——–?

  1. I2>Cl2>Br2>F2
  2. F2>Cl2>I2>Br2
  3. F2>Cl2>Br2>I2
  4. Cl2>F2>Br2>I2

C